Attaching means for ignition breaker-boxes.



W. J. BROWN ATTACHING MEANS FOR lGNiTlON BREAKER BOXES.

APPLICATION man mum. 1911.

1,251,472. Patented Jan.1, 1 918.

1 3 z pvzfw 727 Mam/w J 5K0 lA A/ UNIT STATES PATENT oEEIoE.

WILLIAM J. BROWN, 0E NEWARK, NEw JERSEY, ASSIGNOR T0 srL COMPANY, oE NEWARK, NEW JERSEY.

ITD O RF ELECTRICAL ATTACHING ,MEAN'S, Eon IGNITION BREAKER-BOXES.

Application filed May 14, 1917; Serial No. 168,582.

To all whom it may concern:

Be it known that I, WILLIAM J. BROWN, a citizen of the United States, residing at Newark, in the county of E'mex and State of New Jersey, have invented certain new and useful Improvements in Attaching Means for Ignition Breaker-Boxes, of which the following is a specification.

My invention relates to means for attachin-g breaker boxes to ignition devices, such I as magnetos, and, as illustrated 'in the accompanying drawing, is particularly adapted for use in connection with an inductor type of magneto in which the induction coil is carried on the magnetic field directing structure which is revoluble about the axis of the rotating inductor; the field structure structures of this nature, the parts that are revoluble for the purpose of adjusting the time of ignition have considerable inertia and the tlming lever used for moving the revoluble parts must be securely fastened to the said parts, it being common practice fora number of manufacturing reasons to make-the breaker box carrying the timing lever a separate part from the rest of the members constituting the revoluble structure. I It is the object of my invention to provide means for fastening the breaker box carrying the timing lever to that member of therevoluble structure to which the member is attached, such that the fastening will be simple, and therefore cheap to manufacture, as well as one that will not give way under the strains to which it is subjected.

WVhile obtaining a secure means for fastening the. breaker box to one of the revoluble members, it is another object of myinvention to provide a ready means'of adjusting the position of the breaker box on the said member before the securing means is brought into action. I

These and other objects of my invention will be understood on referring to the drawing, in which Figure 1 is a part elevation Specification of Letters Patent.

Patented J an. 1, 1918.

and sectional View of a magneto known as the Dixie type.

Fig. 2 is a sectional view on the line 2-2 through the breaker box, bearing holder and fastening means.

Fig. 3 is a perspective view of the bearing holder of Fig. 1 with the breaker box re- 1 moved but with the clamping ring in position within the bearing holder.

Referring now particularly to the details illustrated in the various views, ,in which like numbers refer to corresponding parts,

1 is the base of a magneto having arear end plate 2 and front end plate 3 between which are mounted magnets 4, one of which is shown removed. The end plate 2 carries a bearing holder 5 and the end plate 3 carries a bearing holder 6 having bearings 7 (only one of which is shown) mounted therein. Bearingholder 5 has a flange 8 fastened to a field pole structure 9 by screws 10. Bearing holder 6 has a flange 11 fastened to the field pole structure 9 by screws 12 'which'pass through screw holes 13. The flange 11 also has holes let for dowel pins to assist in alining the bearing holder 6 on the field pole structure 9. The field pole structure 9 carries the usual magnetic laminations 15 between the legs of which is carried an induction coil 16, one end of the primary of said coilbeing carried out to thebreaker box, through slot 39 in flange 11 and groove 38 in sleeve 28, by a suitable insulated conductor 17. 'Bearing holder 6 is slotted at 18 for the gear 19 that meshes with the distributer gear 20 which is used to drive the 'distributer for distributing the sparks from the secondary of the coil 16 to the various plug wires connected tothe posts 21 (only 2 of which are shown). The parts of the field structure, the coil, distributer, -etc., will not be further described as they form no partof my invention and have only been mentioned for the general descriptive purposes of the magneto to which 'my invention is applied.

pole structure 9 carrying thelaminations by means of flanges 8 and 11 to the field 15 and induction coil 16, constitute a rotatable Structure having considerable inertia and since changes in magnetic flux through the laminations 15 and core 22 of coil 16 are produced by a rotor carried on and driven by the shaft 23 the rotatable structure mentioned, if the same position of break at the field poles be maintained, must be adjustable around the axis of rotation of therotor while adjusting the time of spark produced-by the cam 24 carried on the end of the rotor shaft 23, the same being held thereto by screw :25, as this cam acts on the circuit breaker (one member only of which is shown at 2 6) and the breaker box 27, on which the breaker elements including part 26 are mounted, must be securely fastened to the end of the bearing holder 6. The breaker mechanism forming no part of this invention is not further described and for sake of clearness is not shown in detail, however, a suitable type of breaker is illustrated in Patent #1,190,785, issued July 11, 1916 to C. T. Mason. To accomplish the purpose I set within the outward projecting sleex e 28 of the bearing holder 6 a relatively heavy ring 29, preferably slotted at 30 so it will have a certain amount of resiliency. The rim of the breaker box 27 is adapted to pass over the end of sleeve 28 and be in a plane adjacent the ring 29. Screws 31 and 32 are adapted to pass through holes in the rim of the breaker box 27 and through slots 33- and 5-1 in the end of sleeve 28 and into tapped holes 35 and 36 in the ends of the ring 29, which has a portion removed so that it does not form a complete annular ring. It will be seen that when the screws 31 and 32 are turned in the proper direction the ring 29 will be expanded against the inner walls of the sleeve 28, gripping the same very tightly. The slots 33 and 34 are made of some length, as shown, so that the breaker box 27 and the ring 29 may be rotated on the sleeve :28 to get the breaker box lever 37 in any desired position with reference to the revoluble structure before the "screws 31 and 32 are operated to expand the ring 29 for the purpose explained.

After the breaker box has been securely clamped to the sleeve 28 of the bearing holder 6 it will be seen that any movement of the lever arm 37 will cause the entire field pole structure to be moved for the purpose of keeping the same relative position of break of the rotor from the field poles, at the same time the position of the breaker arm 26 on the breaker box 27 is moved with reference to the cam-24L.

In the past the breaker box has been held to the sleeve 28 of bearing holder 6 or its equivalent by various means, such as screws, but these become loosened or break off and allow the breaker box to slip thereby changand secondary windings and relativelystationary means for directing the flux through said coil windings, a timing member for adjusting the time ofvactionof the primary of'said coil and the passage of flux through the windings, said timing means having an elementfastened to the flux directing means, adivided ring mounted within the extremity 'of said element, said timing member being mounted on'the exterior of said element adj acent said divided ring and means mounted in the timing member and cooperating with said ring for drawing said ring securely against-the inner periphery ofrsaid element for the purpose described. a

In an ignition device, a revoluble'structure carrying flux directing members andan induction coil having primary and secondary windings in operative relation thereto, "sai'd revolub'le :structure 'also having a bearing holder having a sleeve extending'laterally therefrom, a'divided ring positioned within andat the extremity ofsaid sleeve, a'breakenbox carrying means for controlling the primary" circuit of=the"co1l, said box being mounted on "the "outer extremity of "saidsleeve adjacentsai'd ring and'means on the breaker box passing through the said sleevefor drawing the ring securely against 'said'sleevefor the purpose described.

i 3. In an ignition device, a"revoluble structure carrying flux directing members and an lIIClllClIIOll COll having primary and secondar windings in operative relation thereto, said revoluble structure also having a bearmg holder having a sleeve extending laterally therefrom,an expans'ible member positioned within and at the extremity of said sleeve,'a breaker box for controlling the action ofsaidcoil windings, said'boxbeing carried on the sleeve adj acent the expansible member and meansfastened to-the breaker box for expandingthe expansible member against thesleeve wherebythe breaker box 'is' securely fastened thereto.

4. In an ignition device, a revoluble-structure carry-ing flux directing members and an induction icoil having primaryand "second- "arywindings in operative relation thereto, "said revoluble structure also having a hearing holder having a slee've; extending laterally therefrom, aircxpansible member positioned Within and at the extremity ofsaid sleeve, a breaker box for oontrollin'g'the action of said coil windings, said box beingcarried on the sleeve adjacent the expansible member and means for first adjusting the breaker box in position on the sleeve and means for securely fastening the box to the sleeve by expanding the expansible member as described.

5. In an ignition device, a revoluble structure carrying flux directing members and an induction coil having primary and secondary windings in operative relation thereto, said revoluble structure also having a bearing holder having a sleeve extending laterally therefrom, a relatively heavy member having means for rendering it resilient positionedwithin the end of the sleeve, a breaker box for controlling the ignition circuits mounted on the'end of the sleeve adjacent said member, and means carried on the breaker box and cooperating with the said member to clamp the breaker box, memher and sleeve securely together for the purpose described I 6. In combination, a breaker box for controlling an ignition circuit, a support forsaid box, an expansible member within said support and'means carried by said box for expanding said expansible member whereby it clamps the box and support securely together.

7; In combination, a breaker box for controlling an ignition circuit, a support for said box, an expansible member Within said support and screw adjusting means carried by said box for adjusting its position and said support, said screws also serving to spread the ends of said expansible member to grip the support for the purpose described.

In witnesswhereof I afiix my signature.

WILLIAM J. BROWN.

Copies of this patent may be obtained tor five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

